i think a save bet would be to get baby brine shrimp, that way they can fist it in the mouth, in my opinion, i would let the fry grow out for about a week, removing most if not all fry at the end of the week, let them grow out a little more in a separate tank, and then move them into a larger holding tank till you have got a plan on what you want to do with them. of course given your sercumstances i think letting the parents care for the brood is best. i hope some one with a little more experience comes along, giving you relible info on what you need to do, as of now we are kind os just winging it.